London has been battered by 50mph winds that have felled trees and caused travel chaos. Powerful gusts swept across the capital as the Met Office issued a yellow "be aware" weather alert for most of the country.

Chelsea hope to continue their rich recent FA Cup pedigree when they face Manchester United in Sunday's quarter-final at Old Trafford.

United, the runaway Barclays Premier League leaders and 19 points clear of fourth-placed Chelsea, last won the FA Cup in 2004. Since 2007, the Blues have dominated the competition with four wins in six years, while interim manager Rafael Benitez lifted the trophy with Liverpool in 2006.

Following the highs of Wembley and Munich last May, Chelsea are enduring a torrid 2012/13 season and became the first Champions League holders to exit at the group stage last November.

The Blues lost their opening last-16 Europa League fixture with Steaua Bucharest on Thursday night and Benitez is pleased to have a swift change of focus. "It's a positive. It's good and it's a challenge for us," he said. "In terms of the focus of the players, it's good. We have an opportunity very quickly to change things.

"It's a good competition, a very exciting competition and Chelsea, as a club and as a team, have been doing really well. Hopefully we can carry on doing well after this game. That means that we will be through."

Bar the third-round defeat of Southampton, so far this season, the FA Cup has not been one of solace for Chelsea or Benitez. The Blues needed a replay to defeat npower League One side Brentford, then claimed a 2-0 win at Middlesbrough in a fifth-round tie overshadowed by comments made by Benitez.

The Spaniard hit back at his continual barracking by the club's supporters, telling them to use their energies to support the team and criticising the decision to name him 'interim manager', rather than just 'manager'.

Benitez will renew hostilities with Ferguson at Old Trafford, where the hosts will be looking to prove a point following their Champions League elimination to Jose Mourinho's Real Madrid in midweek.

But Benitez would not be drawn on the nature of his relationship with Sir Alex Ferguson. "I am a manager and I just concentrate on doing my job," he said, before adding that he will not be joining his United counterpart for a glass of red wine post-match.

"We know that he has a good team so this will be a very difficult game. That is normal. When you're running a top side and you're playing against top sides, it's always difficult."